公开(公告)号：US20180150499A1

公开(公告)日：2018-05-31

申请号：US15362712

申请日：2016-11-28

Applicant: SAP SE

Inventor： Joo Yeon LEE ,  Eunsang KIM ,  Myung Sun PARK ,  Sunghoon LEE ,  Hanggjun CHO

IPC: G06F17/30 ,  G06F11/14

CPC classification number: G06F16/2358 ,  G06F11/1471 ,  G06F11/2038 ,  G06F11/2048 ,  G06F11/2097 ,  G06F2201/80

Abstract: Systems and methods for generating a metadata log in a database recovery system include generating, at its primary system, a metadata log for a logging period. A change applied to a metadata object accessible from the primary system is detected, and upon detection, the system identifies a pair of a unique metadata identifier and a metadata type for the changed metadata object and determines a metadata structure of the changed metadata object. A data exchange object for the metadata structure is generated and a data exchange element from the data exchange object is created. The metadata log is updated with log information that includes the data exchange element and the pair, which is associated with the data exchange element. Upon the logging period ending, the metadata log is transmitted to a secondary system of the database recovery system for replaying. Related apparatus, systems, techniques and articles are also described.

公开(公告)号：US20180150362A1

公开(公告)日：2018-05-31

申请号：US15362701

申请日：2016-11-28

Applicant: SAP SE

Inventor： Joo Yeon LEE ,  Eunsang KIM ,  Sunghoon LEE ,  Hanggjun CHO ,  Kyungyul PARK

IPC: G06F11/14 ,  G06F17/30

CPC classification number: G06F11/2094 ,  G06F11/2097 ,  G06F16/25 ,  G06F2201/84

Abstract: Systems and methods for generating a platform-independent metadata catalog framework of a database system are disclosed. These include receiving, at the database system, a metadata object, and determining a version of the received metadata object. Responsive to determining that a metadata catalog, which has catalog entries associated with unique versions of metadata objects, does not include a catalog entry associated with the version of the received metadata object, a catalog entry in the metadata catalog is created. The created catalog entry is then associated with the version of the received metadata object. Furthermore, a version number based on the version of the received metadata is generated, which is associated with the created catalog entry. Related apparatus, systems, techniques and articles are also described.